Quick Answer
P0953 means: DTC P0953 refers to a high input signal from the transmission range sensor, indicating potential issues in the transmission system.
Can I drive with P0953? Immediate attention is recommended to avoid transmission failure.
Common Questions
What does P0953 mean and how does it affect my car?
The P0953 code indicates that there's a problem with the transmission range sensor circuit. This can lead to issues like erratic shifting, difficulty in engaging gears, or even complete transmission failure, which can severely impact your vehicle's performance.
What are the most common causes of P0953 and how much does it cost to fix?
Common causes of P0953 include a faulty transmission range sensor and damaged wiring. Repair costs can vary; replacing the sensor typically costs between $150 and $300, while wiring repairs may range from $100 to $200.
Can I drive my car with P0953 or should I stop immediately?
It's not safe to continue driving with the P0953 code. While you might be able to drive short distances, ignoring this code can lead to more severe transmission issues, potentially leaving you stranded.
How can I diagnose P0953 myself using GeekOBD APP?
To diagnose P0953 with the GeekOBD APP, connect your OBD2 scanner, read the code, and review the freeze frame data for context. Check the sensor's voltage and continuity using a multimeter, and inspect the wiring for any damage.
What vehicles are most commonly affected by P0953?
The P0953 code is frequently seen in models like the 2013-2018 Ford Fusion and the 2014-2019 Chevrolet Malibu, among others. Always check for manufacturer recalls or technical service bulletins (TSBs) related to the transmission system.
How can I prevent P0953 from happening again?
Regular maintenance, including timely transmission fluid changes and electrical system checks, can help prevent issues related to the P0953 code. It's advisable to have your vehicle inspected by a qualified technician regularly.
What is P0953?
The DTC P0953 code indicates an issue with the transmission range sensor circuit, specifically relating to a high input signal. This sensor, also known as the transmission position sensor, detects the position of the gear shifter and relays this information to the vehicle's engine control unit (ECU). A high input signal can suggest that the sensor is stuck in a position that the ECU does not expect, leading to various performance issues. Drivers may experience erratic shifting, difficulty in finding the right gear, or even complete transmission failure in severe cases. Understanding this code is crucial for timely repairs, as neglecting it can lead to more extensive damage to the transmission system, increased repair costs, and a potential safety hazard on the road. In many cases, this code may arise from electrical issues, such as frayed wires or corroded connectors, but it can also be triggered by a faulty sensor itself. Regular maintenance, including checks on the transmission system and electrical connections, can help prevent this code from appearing.
System: P - Powertrain (Engine, Transmission, Emissions)
Symptoms
Common symptoms when P0953 is present:
- The check engine light illuminates or blinks, indicating a problem with the transmission system.
- Drivers may notice the vehicle hesitating or jerking during acceleration, making it difficult to shift smoothly between gears.
- Fuel economy may decrease significantly, with some drivers reporting a drop of 10-15% due to improper shifting.
- Difficulty in engaging the transmission into drive or reverse, leading to frustrating and unsafe driving experiences.
- Unusual noises coming from the transmission, such as grinding or whining, can also indicate a problem related to the P0953 code.
Possible Causes
Most common causes of P0953 (ordered by frequency):
- The most common cause of the P0953 code is a faulty transmission range sensor, which accounts for approximately 40% of cases. This sensor can fail due to wear and tear or electrical malfunctions.
- Another frequent cause is damaged wiring or connectors in the transmission range sensor circuit, which can lead to incorrect signals being sent to the ECU.
- Poor maintenance practices, such as not changing the transmission fluid regularly, can also lead to P0953 appearing. Keeping up with fluid changes can prevent sensor and transmission damage.
- Less common but serious causes include internal transmission issues, such as a failing transmission control module (TCM), which can disrupt the entire transmission operation.
- A rare cause could be software glitches within the vehicle's ECU that misinterpret the sensor's input, requiring an update or reprogramming of the software.
P0953 Repair Costs
Cost Breakdown by Repair Type
Transmission Range Sensor Replacement
Replacing the faulty transmission range sensor with an OEM part ensures proper functionality.
- Total: $150 - $300
- Success rate: 85%
Wiring Repair
Repairing or replacing damaged wiring could resolve the issue without replacing the sensor.
- Total: $100 - $200
- Success rate: 70%
Transmission Control Module Update
Updating or reprogramming the TCM may be necessary if software issues are causing the P0953 code.
- Total: $80 - $150
- Success rate: 60%
Money-Saving Tips for P0953
- Start with the most common and least expensive repairs first
- Use GeekOBD APP to confirm diagnosis before replacing expensive parts
- Consider preventive maintenance to avoid future occurrences
- Compare prices for OEM vs aftermarket parts based on your needs
- Address the issue promptly to prevent more expensive secondary damage
Diagnostic Steps
Professional P0953 Diagnosis Process
Follow these systematic steps to accurately diagnose P0953. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Begin by checking for any visible damage to the transmission range sensor, wiring, and connectors, looking for signs of corrosion or wear (5-10 minutes)
Step 1: Initial visual inspection - Begin by checking for any visible damage to the transmission range sensor, wiring, and connectors, looking for signs of corrosion or wear (5-10 minutes).
Step 2: Step 2: OBD2 scan with GeekOBD APP - Use a reliable OBD2 scanner, such as the GeekOBD APP, to retrieve all diagnostic trouble codes and freeze frame data to understand the context of the fault (10-15 minutes)
Step 2: OBD2 scan with GeekOBD APP - Use a reliable OBD2 scanner, such as the GeekOBD APP, to retrieve all diagnostic trouble codes and freeze frame data to understand the context of the fault (10-15 minutes).
Step 3: Step 3: Component testing - Utilize a multimeter to test the transmission range sensor and its electrical connections for proper voltage and continuity (20-30 minutes)
Step 3: Component testing - Utilize a multimeter to test the transmission range sensor and its electrical connections for proper voltage and continuity (20-30 minutes).
Step 4: Step 4: System function test - After repairs, verify the operation of the transmission range sensor by performing a function test and clearing the codes to see if they reappear (10-15 minutes)
Step 4: System function test - After repairs, verify the operation of the transmission range sensor by performing a function test and clearing the codes to see if they reappear (10-15 minutes).
Step 5: Step 5: Road test verification - Conduct a road test under various conditions to ensure the transmission operates smoothly and that the P0953 code does not return (15-20 minutes)
Step 5: Road test verification - Conduct a road test under various conditions to ensure the transmission operates smoothly and that the P0953 code does not return (15-20 minutes).
Important Notes
- Always verify the repair with GeekOBD APP after completing diagnostic steps
- Clear codes and test drive to ensure the problem is resolved
- Address underlying causes to prevent code recurrence
Real Repair Case Studies
Case Study 1: Ford Fusion Transmission Range Sensor Replacement
Vehicle: 2015 Ford Fusion, 85,000 miles
Problem: The customer reported the check engine light was on and the vehicle was experiencing erratic shifting.
Diagnosis: After an initial visual inspection and using the GeekOBD APP for diagnostics, the transmission range sensor was confirmed faulty.
Solution: Replaced the transmission range sensor and cleared the DTC.
Cost: $220 (parts: $120, labor: $100)
Result: The check engine light turned off, and the vehicle shifted smoothly after the repair.
Case Study 2: Chevrolet Malibu Wiring Repair
Vehicle: 2016 Chevrolet Malibu, 70,000 miles
Problem: The vehicle had difficulty engaging in drive and exhibited a check engine light.
Diagnosis: A thorough inspection revealed damaged wiring in the transmission range sensor circuit.
Solution: Repaired the wiring and reconnected the sensor.
Cost: $150 (parts: $50, labor: $100)
Result: After the repair, the transmission functioned normally, and the P0953 code did not return.